sandyakala, disca. “The Effect of Poly (Vynil Pyrrolidine) (PVP) Added in Variation of Ca2+ and PO43- Concentration in Microbial Cellulose-Hydroxyapatite Composite As Scaffold For Bone Healing”. Journal of Stem Cell Research and Tissue Engineering, vol. 3, no. 2, June 2020, pp. 76-98, doi:10.20473/jscrte.v3i2.20358.